Turn on component updater on chromeos, only for the pnacl component.

chrome/browser/browser_process.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This interface is for managing the global services of the application. Each
 // service is lazily created when requested the first time. The service getters
 // will return NULL if the service is not available, so callers must check for
 // this condition.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_H_
@@ skipping 13 matching lines @@
 class ComponentUpdateService;
 class DownloadRequestLimiter;
 class DownloadStatusUpdater;
 class GLStringManager;
 class GpuModeManager;
 class IconManager;
 class IntranetRedirectDetector;
 class IOThread;
 class MetricsService;
 class NotificationUIManager;
+class PnaclComponentInstaller;
 class PrefRegistrySimple;
 class PrefService;
 class Profile;
 class ProfileManager;
 class RenderWidgetSnapshotTaker;
 class SafeBrowsingService;
 class StatusTray;
 class WatchDogThread;
 
 namespace chrome {
@@ skipping 167 matching lines @@
 #endif
 
   virtual ChromeNetLog* net_log() = 0;
 
   virtual prerender::PrerenderTracker* prerender_tracker() = 0;
 
   virtual ComponentUpdateService* component_updater() = 0;
 
   virtual CRLSetFetcher* crl_set_fetcher() = 0;
 
+  virtual PnaclComponentInstaller* pnacl_component_installer() = 0;

[cpu_(ooo_6.6-7.5), 2013/03/29 22:24:39]

why do we need this member now here?

[jvoung (off chromium), 2013/03/29 22:54:52]

I wanted to have a single instance of the installer, even though the component
can get re-registered.  The single instance is to ensure that there is just one
PnaclProfileObserver.  Also the PnaclProfileObserver needed to be created
"early" to observe the user logins, since the component isn't registered until
after login.

+
   virtual BookmarkPromptController* bookmark_prompt_controller() = 0;
 
   virtual chrome::MediaFileSystemRegistry* media_file_system_registry() = 0;
 
   virtual void PlatformSpecificCommandLineProcessing(
       const CommandLine& command_line) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserProcess);
 };
 
 extern BrowserProcess* g_browser_process;
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_H_